Marion’s post office opened in 1898, and 1 of its places is on the National Register
Most of Marion was built recently: 5% of its homes predate 1940 and the median home dates from 1996. Its Register listing is the William and Martha Myrick House. Below: maps from 1967 on and the census since 1900.
The area that is now Marion was used in the 1860s by rancher Samuel P. Hoyt, whose 600–700 head of cattle grazed over most of Marion's land. The settlement itself was founded in the mid-1870s and was originally named "Morrell" after William Morrell, who built the first house. A large portion of the early settlers were Danish American immigrants, and the community was also often called "Denmark".
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikimedia Commons (1), the National Register of Historic Places (1), Wikipedia, U.S. Geological Survey historical maps, U.S. Census counts (via Wikipedia), the US Post Offices dataset (Blevins & Helbock) and the USGS Geographic Names Information System. Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.